package indi.jp.project.core.util;

import java.util.Random;

public class RandomUtil {

    public static String getRandomString(int length) {
        String str = "abcdefghijklmnopqrstuvwxyz_ABCDEFGHIJKLMNOPQRSTUVWXYZ-0123456789";
        Random random = new Random();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < length; i++) {
            int number = random.nextInt(62);
            sb.append(str.charAt(number));
        }
        return sb.toString();
    }

    public static void main(String[] args) {
        System.out.println(getRandomString(256));
    }

}
